High chromium steel roller

A technology of high-chromium steel and rolls, which is applied in the direction of rolls, metal rolling, metal rolling, etc., can solve the problems of poor thermal conductivity, poor wear resistance, and insufficient hardness, and achieve non-slip, high wear resistance, and high hardness. Effect

Inactive Publication Date: 2013-09-18
WUXI CAIYUN MACHINERY & EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current high-chromium steel rolls have certain defects in their composition ratio, and they still have some shortcomings when used in rough rolling mills. The main performances are insufficient hardness, poor wear resistance, poor thermal conductivity, and easy slipping in the rolling process. Wait

Method used

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Embodiment Construction

[0010] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0011] Embodiments of the invention include:

[0012] A high-chromium steel roll, comprising a sheath and a core, the sheath comprising the following components by mass percentage: C: 1.1-1.3%, Si: 0.9-1.1%, Mn: 0.4-0.6%, P: ≤0.03 %, S: ≤0.03%, Cr: 10.4-10.6%, Ni: 0.7-0.9%, Mo: 0.9-1.1%, V: 0.2-0.4%, Nb: 0.2-0.4%, Re: 0.02-0.04%, The rest is Fe; the core includes the following components by mass percentage: C: 3.3-3.5%, Si: 1.9-2.1%, Mn: 0.4-0.6%, P: ≤0.1%, S: ≤0.03%, Cr: ≤0.03%, Ni: 0.4-0.8%, Mo: 0.2-0.4%, Re: 0.04-0.06%, and the rest is Fe.

[0013] Wherein, the thickness of the outer skin is greater than or equal to 45mm.

[0014] The surface hardness of the outer layer is 74-83HSD, and th...

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Abstract

The invention discloses a high chromium steel roller which comprises a jacket and a core, wherein the jacket comprises the following components by mass percentage: 1.1-1.3% of C, 0.9-1.1% of Si, 0.4-0.6% of Mn, less than or equal to 0.03% of P, less than or equal to 0.03% of S, 10.4-10.6% of Cr, 0.7-0.9% of Ni, 0.9-1.1% of Mo, 0.2-0.4% of V, 0.2-0.4% of Re, and the balance of Fe; and the core comprises the following components by mass percentage: 3.3-3.5% of C, 1.9-2.1% of Si, 0.4-0.6% of Mn, less than or equal to 0.1% of P, less than or equal to 0.03% of S, less than or equal to 0.03% of Cr, 0.4-0.8% of Ni, 0.2-0.4% of Mo, 0.04-0.06% of Re, and the balance of Fe. With the adoption of the mode, the rigidity of the high chromium steel roller can be improved; the roller has good abrasive resistance and hot tearing resistance; and the possibility of slipping during steel rolling is low.

Description

technical field [0001] The invention relates to the technical field of rolls, in particular to a high-chromium steel roll. Background technique [0002] The high chromium steel roll is produced by centrifugal compound casting method, the working layer is high chromium steel, and the core is high strength gray iron or ductile iron. It is a new product development centering on the application of high chromium steel based on the centrifugal compound casting high chromium steel roll ring. It is a new type of roll researched and developed by European roll manufacturers from the late 1970s to the early 1980s. Roughing work rolls, which are often used in hot strip continuous rolling mills, need to withstand high loads, have high thermal fatigue characteristics and wear resistance, and prevent accidental slippage. [0003] However, the current high-chromium steel rolls have certain defects in their composition ratio, and they still show some shortcomings when used in rough rolling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B27/02C22C38/48C22C38/12B32B15/18B32B1/00
Inventor 张晓明
Owner WUXI CAIYUN MACHINERY & EQUIP
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